/Engine/Source/Runtime/Engine/Public/Audio.h
This will return the name of the SoundClass of the Sound that this buffer(SoundWave) belongs to. NOTE: This will find the first cue in the ObjectIterator list. So if we are using SoundWaves in multiple places we will pick up the first one only.
[FName](API\Runtime\Core\UObject\FName) GetSoundClassName()